Cushcraft A-4S Four Element HF Yagi Antenna - 10/15 & 20 Meters.
Cushcraft A-4S Tri-Band Beam Antennas are true high performance beams for 20, 15 and 10 meter operations. Precisely tuned high-power traps, carefully selected element lengths, and proper spacing combine to make the A-4S Tri-Band Beams the preferred antennas for your HF work! They are the premium antennas with all of the features that you want. High gain, low SWR, and wide bandwidth keep the contacts coming in. Plus, all of the U-bolts, clamps, and hardware are made of stainless steel. Cushcraft A4S antennas have pinned boom sections and formed aluminum brackets to keep elements straight in all conditions. Their solid construction keeps the A-4S antennas where they belong--on the tower!
HF Beam Antenna Type:Yagi
HF Beam Antenna Elements:4
HF Beam Element Material:Aluminum tubing
Antenna Power Rating:2,000 W
Beam Antenna Boom Length:18.00 ft.
HF Beam Antenna Boom Diameter (in.):2.000 in.
HF Beam Antenna Longest Element:32.00 ft.
Beam Antenna Turning Radius:18.40 ft.
Effective Moment (approximate):681 ft. lbs.
Mast Mounting Clamp Minimum:1.250 in.
Mast Mounting Clamp Maximum:2.000 in.
Wind Surface Area:5.500 sq. ft.
HF Beam Antenna Band Coverage:20, 15, 10 meters
Feedpoint Impedance:50 ohms
Antenna Feedline Connection Type:Terminal studs, #10
Antenna Weight:37.00 lbs.
Beam Antenna Gain:8.9 dBi
Beam Antenna F/B (dB):25.0 dB
Bandwidth at 2:1 SWR:Over 500 kHz